The Key

• Remember, that the symbols are relevant only to the map you are using!

• Symbols change across different manufacturers maps, and may even change across different versions!

• If in doubt about a symbol, check the key!

Symbols

Ordnance Survey interpret both man made and natural features on the map, through a system of

symbols.

Every Ordnance Survey map has a key showing the definition of each symbol to help you. We will look at

a few of the more common symbols.

Map Symbols - Roads

Map Symbols - Railways

Map Symbols - Hills

Map Symbols - Water

Map Symbols - General

Tourist Information

Map Symbols - Misc

Map Symbols - Access

Hills

• Hills are shown using contour lines

• Contour lines join areas of equal height • Marked at every 10m of height change• Rise and fall called “Vertical Interval” (VI)• Contour lines seem to disappear at cliffs

Symbol examples